Well-Defined Silica-Supported Olefin Metathesis Catalysts
Authors:
- 24 February 2009
- journal article
- research article
- Published by American Chemical Society (ACS) in Organic Letters
- Vol. 11 (6) , 1261-1264
Abstract
Two triethoxysilyl-functionalized N-heterocyclic carbene ligands have been synthesized and used to prepare the corresponding second-generation ruthenium olefin metathesis catalysts. These complexes were then grafted onto silica gel, and the resulting materials were efficient heterogeneous catalysts for a number of metathesis reactions. The solid-supported catalysts were shown to be recyclable over a number of reaction cycles, and no detectable levels of ruthenium were observed in reaction filtrates (ruthenium concentration of filtrate <5 ppb).Keywords
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